Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e247701fc873466…

MALICIOUS

PDF

39.9 KB Created: 2020-10-06 20:57:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 62f91a52fc2fb18bb3bdad2b556a486a SHA-1: 70b4e70b00c7ed9b7e38da8592ae522fd85c826a SHA-256: 1e247701fc87346660205616bc07194126725954e0742b2643a7b948b00134a2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically targeting a 'Black Friday Dyson Airwrap' lure. The ML classifier strongly indicated maliciousness, and the document's structure suggests it functions as a link farm designed to funnel users to potentially harmful sites. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gettraff.ru/pify?keyword=black+friday+dyson+airwrap In PDF document text
    • https://site-1039361.mozfiles.com/files/1039361/89311795703.pdfIn PDF document text
    • https://site-1036993.mozfiles.com/files/1036993/73675648204.pdfIn PDF document text
    • https://site-1040251.mozfiles.com/files/1040251/56047184370.pdfIn PDF document text
    • http://files.jbmilart.com/uploads/1/3/1/4/131437812/69b54a780d80cc.pdfIn PDF document text
    • http://ludavom.lightandshinedesigns.com/uploads/1/3/1/3/131398455/67c9b89cee6da0.pdfIn PDF document text
    • https://site-1037163.mozfiles.com/files/1037163/zapofatug.pdfIn PDF document text
    • https://site-1036815.mozfiles.com/files/1036815/48007981507.pdfIn PDF document text
    • https://site-1042429.mozfiles.com/files/1042429/79270361862.pdfIn PDF document text
    • https://site-1037120.mozfiles.com/files/1037120/18475090951.pdfIn PDF document text
    • https://site-1036646.mozfiles.com/files/1036646/64892640324.pdfIn PDF document text
    • https://site-1040095.mozfiles.com/files/1040095/15233922397.pdfIn PDF document text
    • https://site-1037009.mozfiles.com/files/1037009/binujizopasuzap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEB 5456 bytes
SHA-256: ea8bf331dcdf0557dc2f94a8370707ac8a7f5f1edcbb76ffcf727756f3e87733
font_01_sfnt_off00006fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAD 10392 bytes
SHA-256: 3a3b2aad039739fabaafc5045f8708a315024167b4b1acc2d1946639579ab22c

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